Replacing some elements in the row with maximum value along the row

Hi,

I want to replace some elements of each rows in a matrix with the maximum value along the rows.

For example,

A=[1 2 3 0 0;7 4 5 1 0;2 4 6 0 3] to B=[1 2 3 3 3;7 4 5 1 7;2 4 6 6 3]

[Scott MacKenzie]

Your question is too vague. Please give gave an example of what you are trying to do.

[Rajesh]

Hi, I have matrix with many rows and columns. I want to replace some elements from each row. That is I have lot of zeros in each rows. I want to replace the zeros with the maximum no present on the same rows. As I gave an example above, let's consider the following matrix A=[1 2 3 4 0 0;2 4 6 0 0 0;3 4 7 8 0 0] In this matrix maximum of row 1 is 4, maximum of row 2 is 6 similarly for row 3 it is 8. Now, I want the following matrix from A that is B=[1 2 3 4 4 4;2 4 6 6 6 6;3 4 7 8 8 8] Hope, it is clear now

[Scott MacKenzie]

Yes, I see now. I didn't realize that B was your example result. Just posted an answer.

Answer 1

[Scott MacKenzie]

There might be a simpler solution, but this seems to work:

A=[1 2 3 0 0; 7 4 5 1 0; 2 4 6 0 3]

A = 3×5

1 2 3 0 0 7 4 5 1 0 2 4 6 0 3

for i=1:size(A,1)    
    A(i,A(i,:)==0) = max(A(i,:));
end
B = A

B = 3×5

1 2 3 3 3 7 4 5 1 7 2 4 6 6 3

[Rajesh]

That's exactly I wanted. Thanks